We are using the PageLines theme so not sure if it can be compatibility with that and Mac? All cache has been cleared and we have done everything we can think of. Any feedback on as to why my homepage is displaying incorrectly is greatly appreciated.

So - it looks like you have set the height of the slider but the slide images overlaps the height of the slider so the page content is showing underneath the slider as it should but the image runs underneath. http://d.pr/i/Vsd6

Yes, we did adjust the CSS code in the slider settings... We were trying to make it smaller in height and width. So, it looks like that may be our problem? I will try to set the slider code back to the original and see what that does. Then that leaves us with a big slider then, which we don't want. Stay tuned.